S4_Electric Circuits_Review

An engineer uses the potential divider shown in the diagram. He needs the output voltage to be one tenth (1/10) of the input voltage.

• X = 1.0 ; Y = 9.0

• X = 1.0 ; Y = 10.0

• X = 9.0 ; Y = 1.0

• X = 10.0 ; Y = 1.0

The current in a kettle is 10A and it is protected by a 13A fuse. The owner of the kettle replaces the 13A fuse with a 3A fuse. What happens when the kettle is switched on?

• The fuse blows and the kettle is damaged.

• The fuse blows and the kettle is undamaged

• The fuse does not blow and the kettle works correctly

• The fuse does not blow but the kettle fails to work

The circuit diagram shows a 4.0Ω resistor and an 8.0Ω resistor connected to a 6.0V battery.

What is the current in the battery?

• 0.50 A

• 0.75 A

• 1.5 A

• 2.0 A

The diagram shows a 10Ω resistor and a 20Ω resistor connected in a potential divider circuit.

What is the reading on the voltmeter?

• 4.0 V

• 6.0 V

• 8.0 V

• 12.0 V

The diagram shows a light-dependent resistor (LDR) connected in a potential divider circuit.

• A

• B

• C

• D

The diagram shows a potential divider circuit.C

• A

• B

• C

• D

Four lamps are each labelled '60W 230V'.

CIn which circuit are the lamps connected so that they operate at normal brightness?

• A

• B

• C

• D

What type of logic is this table showing:

• AND

• OR

• NOT

• NOR

What will the circuit's output be?

• 1

• 0

A NOT gate has…

• Two inputs and one output
• One input and one output
• One input and two outputs
• Two inputs and two outputs